First, review these basic troubleshooting steps before continuing.
Be sure your broadband Internet source is connected to your wireless router.
Be sure your wireless router is turned on, antennas attached, and transmitting a signal.
If a desktop, be sure your internal Wifi Adapter is installed and antennas are attached.
1. If this is a notebook, is your wireless adapter enabled?
NO / DON'T KNOW YES
To be sure it is enabled, consult yor notebook manual to locate the wireless switch. This is usually either a button near the Power button, or it is a keyboard key combination, like Fn & F1 (or F3, etc). Just press and hold the special function key (Fn, normally in the bottom left corner of the keyboard) and tap the function row key (ie. F1) that enables/disables your Wifi adapter.
2. If you try to make a new connection in the Network and Sharing Center, do you have an option to create a wireless connection?
NO / DON'T KNOW YES
If you have no option to manage wireless connections, and when attempting to create a new connection, you are not given an option to connect wirelessly, then Windows may not be able to properly detect or use your Wifi adapter.
If you open the Device Manager and do not see your Wifi adapter, then turn off your system and be sure it is properly seated in it's slot. If you see a yellow exclamation point in the Device Manager, then you will need to reinstall your Wifi adapter's drivers and restart your system.
3. Click on the icon in your system's notification area next to the clock. Is your system able to view any available wireless networks?
NO / DON'T KNOW YES
If your drivers are installed and all seems well, only you can't seem to get a signal, then make sure of the following:
Cycle the power on your Wifi router by unplugging the power for about 15 seconds, plugging it back in, and letting it reacquire it's connection and begin transmitting again.
You may consider retarting your system to reset your Wifi adapter.
If using a desktop, make sure your Wifi antenna(es) are attached to your adapter on the rear of your system.
If using a notebook, doublecheck to be sure your Wifi adapter is enabled as they can easily become disabled.
Make sure there are no causes for radio wave interference (like cordless phones) directly between your system and the router.
Be sure that you are not more than 100 feet or so from your router, avoiding obstructions like multiple walls or floors.
4. When establishing a connection to an available wireless network, does Windows ask you for a password when you try to connect to the router you recognize as yours?
YES NO / DON'T KNOW
If you are asked for a password, this means Windows has detected that the Wifi router has security enabled, meaning only users with the correct password may gain access. You will either need to locate the password and have it ready when Windows asks for it, or disable the security in the router (not recommended).
It would seem that you are having more trouble than this troubleshooter addresses. Be sure to give us a call if you would like to troubleshoot this with a support technician.
UNSUCCESSFUL RESOLUTION - END OF TROUBLESHOOTER - RESET